<template>
  <div class="container">
    <div class="app-container">
      <div class="left">
        <el-input
          v-model="queryParams.keyword"
          style="margin-bottom:10px"
          type="text"
          prefix-icon="el-icon-search"
          size="small"
          placeholder="输入员工姓名全员搜索"
          @input="changeValue"
        />
        <!-- 树形组件 -->
        <el-tree
          ref="treeDept"
          :data="depts"
          :props="defaultProps"
          default-expand-all
          :expand-on-click-node="false"
          node-key="id"
          @current-change="selectNode"
        />
      </div>

      <div class="right">
        <el-row type="flex" justify="end" class="tools">
          <el-button size="mini" type="primary" @click="$router.push('/employee/detail')">添加员工</el-button>
          <el-button size="mini" @click="showExcelDialog = true">excel导入</el-button>
          <!-- <el-button size="mini" @click="exportEmployee">Excel导出</el-button> -->
        </el-row>
        <!-- 表格 -->
        <el-table
          :data="list"
          align="center"
        >
          <el-table-column prop="staffPhoto" align="center" label="头像">
            <template v-slot="{row}">
              <el-avatar v-if="row.staffPhoto" :size="30" :src="row.staffPhoto" />
              <span v-else class="username">{{ row.username.charAt(0) }}</span>
            </template>
          </el-table-column>
          <el-table-column prop="username" label="姓名" />
          <el-table-column prop="mobile" label="手机号" sortable />
          <el-table-column prop="workNumber" label="工号" sortable />
          <el-table-column prop="formOfEmployment" label="聘用形式">
            <template v-slot="{row}">
              <span v-if="row.formOfEmployment === 1">
                正式
              </span>
              <span v-else-if="row.formOfEmployment === 2">
                非正式
              </span>
              <span v-else>
                无
              </span>
            </template>
          </el-table-column>
          <el-table-column prop="departmentName" label="部门" />
          <el-table-column prop="timeOfEntry" label="入职时间" sortable />
          <el-table-column label="操作" width="280px">
            <template v-slot="{row}">
              <el-button size="mini" type="text" @click="$router.push(`/employee/detail/${row.id}`)">查看</el-button>
              <el-button size="mini" type="text">角色</el-button>
              <el-popconfirm title="确认删除该行数据吗？" @onConfirm="confirmDel(row.id)">
                <el-button slot="reference" style="margin-left:10px" size="mini" type="text">删除</el-button>
              </el-popconfirm>
            </template>
          </el-table-column>
        </el-table>
        <!-- 分页 -->
        <el-row style="height: 60px" align="middle" type="flex" justify="end">
          <el-pagination
            background
            layout="total, prev, pager, next"
            :total="total"
            :current-page="queryParams.page"
            :page-size="queryParams.pagesize"
            @current-change="changePage"
          />
        </el-row>
      </div>
    </div>
    <import-excel :show-excel-dialog.sync="showExcelDialog" @updateSuccess="getEmployeeList" />
  </div>
</template>
<script>
// import FileSaver from 'file-saver'
import { transListToTreeData } from '@/utils/index'
import { getDepartment } from '@/api/department'
import { getEmployeeList, delEmployee } from '@/api/employee'
import ImportExcel from './components/import-excel'
import importExcel from './components/import-excel.vue'
export default {
  name: 'Employee',
  components: { importExcel },
  data() {
    return {
      showExcelDialog: false,
      components: {
        ImportExcel
      },
      list: [],
      // 查询参数
      queryParams: {
        departmentId: null,
        page: 1, // 当前页码
        pagesize: 10,
        keyword: '' // 模糊搜索字段
      },
      total: 0, // 记录员工的总数
      depts: [], // 存储组织数据
      defaultProps: {
        children: 'children', // 子节点字段名
        label: 'name'// 显示字段名
      }
    }
  },
  created() {
    this.getDepartment()
  },
  methods: {
    async getDepartment() {
      // 递归方法 将列表转化成树形
      // let result = await getDepartment()
      this.depts = transListToTreeData(await getDepartment(), 0)
      this.queryParams.departmentId = this.depts[0].id
      // 设置选中节点
      // 树组件渲染是异步的 等到更新完毕
      this.$nextTick(() => {
        // 此时意味着树渲染完毕
        this.$refs.treeDept.setCurrentKey(this.queryParams.departmentId)
      })
      // 这个时候参数 记录了id
      this.getEmployeeList()
    },
    // 切换节点时，将新节点赋值给查询参数
    selectNode(node) {
      this.queryParams.departmentId = node.id // 重新记录了参数
      this.queryParams.page = 1 // 设置第一页
      this.getEmployeeList()
    },
    // 获取员工列表
    async getEmployeeList() {
      const { rows, total } = await getEmployeeList(this.queryParams)
      this.list = rows
      this.total = total
    },
    changePage(newPage) {
      this.queryParams.page = newPage // 赋值新页码
      this.getEmployeeList() // 查询数据
    },
    changeValue() {
      // 单位时间内只执行最后一次
      // this的实例上赋值了一个timer的属性
      clearTimeout(this.timer) // 清理上一次的定时器
      this.timer = setTimeout(() => {
        this.queryParams.page = 1
        this.getEmployeeList()
      }, 300)
    },
    async confirmDel(id) {
      await delEmployee(id)
      // 判断是不是最后一条数据和判断是否是第一页
      if (this.list.length === 1 && this.queryParams.page > 1) {
        // 页码减一
        return this.queryParams.page--
      }
      // 重新获取数据
      this.getDepartment()
      this.$message.success('删除成功')
    }
    // async exportEmployee() {
    //   const result = await exportEmployee() // 导出所有的员工接口
    //   // console.log(result) // 使用一个npm包 直接将blob文件下载到本地 file-saver
    //   // FileSaver.saveAs(blob对象,文件名称)
    //   FileSaver.saveAs(result, '员工信息表.xlsx') // 下载文件
    // }
  }
}
</script >
<style scoped lang="scss">
	.app-container{
		background: #fff;
		display: flex;
	}
	.left{
		padding: 20px;
		width: 300px;
	}
	.right {
		flex: 1;
		padding: 20px;
	}
	.tools {
		margin:10px ;
	}
	.username {
		height: 30px;
		width: 30px;
		line-height: 30px;
		text-align: center;
		border-radius: 50%;
		color: #fff;
		background: #04C9BE;
		font-size: 12px;
		display:inline-block;
	}
</style>
